These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

7 files changed, 0 insertions, 778 deletions

diff --git a/kernel/arch/mips/loongson1/common/Makefile b/kernel/arch/mips/loongson1/common/Makefile
deleted file mode 100644
index 723b4ce3b..000000000
--- a/kernel/arch/mips/loongson1/common/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-#
-# Makefile for common code of loongson1 based machines.
-#
-
-obj-y	+= time.o irq.o platform.o prom.o reset.o setup.o
diff --git a/kernel/arch/mips/loongson1/common/irq.c b/kernel/arch/mips/loongson1/common/irq.c
deleted file mode 100644
index 455a7704a..000000000
--- a/kernel/arch/mips/loongson1/common/irq.c
+++ /dev/null
@@ -1,147 +0,0 @@
-/*
- * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
- *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- */
-
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <asm/irq_cpu.h>
-
-#include <loongson1.h>
-#include <irq.h>
-
-#define LS1X_INTC_REG(n, x) \
-		((void __iomem *)KSEG1ADDR(LS1X_INTC_BASE + (n * 0x18) + (x)))
-
-#define LS1X_INTC_INTISR(n)		LS1X_INTC_REG(n, 0x0)
-#define LS1X_INTC_INTIEN(n)		LS1X_INTC_REG(n, 0x4)
-#define LS1X_INTC_INTSET(n)		LS1X_INTC_REG(n, 0x8)
-#define LS1X_INTC_INTCLR(n)		LS1X_INTC_REG(n, 0xc)
-#define LS1X_INTC_INTPOL(n)		LS1X_INTC_REG(n, 0x10)
-#define LS1X_INTC_INTEDGE(n)		LS1X_INTC_REG(n, 0x14)
-
-static void ls1x_irq_ack(struct irq_data *d)
-{
-	unsigned int bit = (d->irq - LS1X_IRQ_BASE) & 0x1f;
-	unsigned int n = (d->irq - LS1X_IRQ_BASE) >> 5;
-
-	__raw_writel(__raw_readl(LS1X_INTC_INTCLR(n))
-			| (1 << bit), LS1X_INTC_INTCLR(n));
-}
-
-static void ls1x_irq_mask(struct irq_data *d)
-{
-	unsigned int bit = (d->irq - LS1X_IRQ_BASE) & 0x1f;
-	unsigned int n = (d->irq - LS1X_IRQ_BASE) >> 5;
-
-	__raw_writel(__raw_readl(LS1X_INTC_INTIEN(n))
-			& ~(1 << bit), LS1X_INTC_INTIEN(n));
-}
-
-static void ls1x_irq_mask_ack(struct irq_data *d)
-{
-	unsigned int bit = (d->irq - LS1X_IRQ_BASE) & 0x1f;
-	unsigned int n = (d->irq - LS1X_IRQ_BASE) >> 5;
-
-	__raw_writel(__raw_readl(LS1X_INTC_INTIEN(n))
-			& ~(1 << bit), LS1X_INTC_INTIEN(n));
-	__raw_writel(__raw_readl(LS1X_INTC_INTCLR(n))
-			| (1 << bit), LS1X_INTC_INTCLR(n));
-}
-
-static void ls1x_irq_unmask(struct irq_data *d)
-{
-	unsigned int bit = (d->irq - LS1X_IRQ_BASE) & 0x1f;
-	unsigned int n = (d->irq - LS1X_IRQ_BASE) >> 5;
-
-	__raw_writel(__raw_readl(LS1X_INTC_INTIEN(n))
-			| (1 << bit), LS1X_INTC_INTIEN(n));
-}
-
-static struct irq_chip ls1x_irq_chip = {
-	.name		= "LS1X-INTC",
-	.irq_ack	= ls1x_irq_ack,
-	.irq_mask	= ls1x_irq_mask,
-	.irq_mask_ack	= ls1x_irq_mask_ack,
-	.irq_unmask	= ls1x_irq_unmask,
-};
-
-static void ls1x_irq_dispatch(int n)
-{
-	u32 int_status, irq;
-
-	/* Get pending sources, masked by current enables */
-	int_status = __raw_readl(LS1X_INTC_INTISR(n)) &
-			__raw_readl(LS1X_INTC_INTIEN(n));
-
-	if (int_status) {
-		irq = LS1X_IRQ(n, __ffs(int_status));
-		do_IRQ(irq);
-	}
-}
-
-asmlinkage void plat_irq_dispatch(void)
-{
-	unsigned int pending;
-
-	pending = read_c0_cause() & read_c0_status() & ST0_IM;
-
-	if (pending & CAUSEF_IP7)
-		do_IRQ(TIMER_IRQ);
-	else if (pending & CAUSEF_IP2)
-		ls1x_irq_dispatch(0); /* INT0 */
-	else if (pending & CAUSEF_IP3)
-		ls1x_irq_dispatch(1); /* INT1 */
-	else if (pending & CAUSEF_IP4)
-		ls1x_irq_dispatch(2); /* INT2 */
-	else if (pending & CAUSEF_IP5)
-		ls1x_irq_dispatch(3); /* INT3 */
-	else if (pending & CAUSEF_IP6)
-		ls1x_irq_dispatch(4); /* INT4 */
-	else
-		spurious_interrupt();
-
-}
-
-struct irqaction cascade_irqaction = {
-	.handler = no_action,
-	.name = "cascade",
-	.flags = IRQF_NO_THREAD,
-};
-
-static void __init ls1x_irq_init(int base)
-{
-	int n;
-
-	/* Disable interrupts and clear pending,
-	 * setup all IRQs as high level triggered
-	 */
-	for (n = 0; n < 4; n++) {
-		__raw_writel(0x0, LS1X_INTC_INTIEN(n));
-		__raw_writel(0xffffffff, LS1X_INTC_INTCLR(n));
-		__raw_writel(0xffffffff, LS1X_INTC_INTPOL(n));
-		/* set DMA0, DMA1 and DMA2 to edge trigger */
-		__raw_writel(n ? 0x0 : 0xe000, LS1X_INTC_INTEDGE(n));
-	}
-
-
-	for (n = base; n < LS1X_IRQS; n++) {
-		irq_set_chip_and_handler(n, &ls1x_irq_chip,
-					 handle_level_irq);
-	}
-
-	setup_irq(INT0_IRQ, &cascade_irqaction);
-	setup_irq(INT1_IRQ, &cascade_irqaction);
-	setup_irq(INT2_IRQ, &cascade_irqaction);
-	setup_irq(INT3_IRQ, &cascade_irqaction);
-}
-
-void __init arch_init_irq(void)
-{
-	mips_cpu_irq_init();
-	ls1x_irq_init(LS1X_IRQ_BASE);
-}
diff --git a/kernel/arch/mips/loongson1/common/platform.c b/kernel/arch/mips/loongson1/common/platform.c
deleted file mode 100644
index ddf1d4cbf..000000000
--- a/kernel/arch/mips/loongson1/common/platform.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
- *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- */
-
-#include <linux/clk.h>
-#include <linux/dma-mapping.h>
-#include <linux/err.h>
-#include <linux/phy.h>
-#include <linux/serial_8250.h>
-#include <linux/stmmac.h>
-#include <linux/usb/ehci_pdriver.h>
-#include <asm-generic/sizes.h>
-
-#include <cpufreq.h>
-#include <loongson1.h>
-
-/* 8250/16550 compatible UART */
-#define LS1X_UART(_id)						\
-	{							\
-		.mapbase	= LS1X_UART ## _id ## _BASE,	\
-		.irq		= LS1X_UART ## _id ## _IRQ,	\
-		.iotype		= UPIO_MEM,			\
-		.flags		= UPF_IOREMAP | UPF_FIXED_TYPE, \
-		.type		= PORT_16550A,			\
-	}
-
-static struct plat_serial8250_port ls1x_serial8250_pdata[] = {
-	LS1X_UART(0),
-	LS1X_UART(1),
-	LS1X_UART(2),
-	LS1X_UART(3),
-	{},
-};
-
-struct platform_device ls1x_uart_pdev = {
-	.name		= "serial8250",
-	.id		= PLAT8250_DEV_PLATFORM,
-	.dev		= {
-		.platform_data = ls1x_serial8250_pdata,
-	},
-};
-
-void __init ls1x_serial_setup(struct platform_device *pdev)
-{
-	struct clk *clk;
-	struct plat_serial8250_port *p;
-
-	clk = clk_get(&pdev->dev, pdev->name);
-	if (IS_ERR(clk)) {
-		pr_err("unable to get %s clock, err=%ld",
-		       pdev->name, PTR_ERR(clk));
-		return;
-	}
-	clk_prepare_enable(clk);
-
-	for (p = pdev->dev.platform_data; p->flags != 0; ++p)
-		p->uartclk = clk_get_rate(clk);
-}
-
-/* CPUFreq */
-static struct plat_ls1x_cpufreq ls1x_cpufreq_pdata = {
-	.clk_name	= "cpu_clk",
-	.osc_clk_name	= "osc_33m_clk",
-	.max_freq	= 266 * 1000,
-	.min_freq	= 33 * 1000,
-};
-
-struct platform_device ls1x_cpufreq_pdev = {
-	.name		= "ls1x-cpufreq",
-	.dev		= {
-		.platform_data = &ls1x_cpufreq_pdata,
-	},
-};
-
-/* Synopsys Ethernet GMAC */
-static struct stmmac_mdio_bus_data ls1x_mdio_bus_data = {
-	.phy_mask	= 0,
-};
-
-static struct stmmac_dma_cfg ls1x_eth_dma_cfg = {
-	.pbl		= 1,
-};
-
-int ls1x_eth_mux_init(struct platform_device *pdev, void *priv)
-{
-	struct plat_stmmacenet_data *plat_dat = NULL;
-	u32 val;
-
-	val = __raw_readl(LS1X_MUX_CTRL1);
-
-	plat_dat = dev_get_platdata(&pdev->dev);
-	if (plat_dat->bus_id) {
-		__raw_writel(__raw_readl(LS1X_MUX_CTRL0) | GMAC1_USE_UART1 |
-			     GMAC1_USE_UART0, LS1X_MUX_CTRL0);
-		switch (plat_dat->interface) {
-		case PHY_INTERFACE_MODE_RGMII:
-			val &= ~(GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
-			break;
-		case PHY_INTERFACE_MODE_MII:
-			val |= (GMAC1_USE_TXCLK | GMAC1_USE_PWM23);
-			break;
-		default:
-			pr_err("unsupported mii mode %d\n",
-			       plat_dat->interface);
-			return -ENOTSUPP;
-		}
-		val &= ~GMAC1_SHUT;
-	} else {
-		switch (plat_dat->interface) {
-		case PHY_INTERFACE_MODE_RGMII:
-			val &= ~(GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
-			break;
-		case PHY_INTERFACE_MODE_MII:
-			val |= (GMAC0_USE_TXCLK | GMAC0_USE_PWM01);
-			break;
-		default:
-			pr_err("unsupported mii mode %d\n",
-			       plat_dat->interface);
-			return -ENOTSUPP;
-		}
-		val &= ~GMAC0_SHUT;
-	}
-	__raw_writel(val, LS1X_MUX_CTRL1);
-
-	return 0;
-}
-
-static struct plat_stmmacenet_data ls1x_eth0_pdata = {
-	.bus_id		= 0,
-	.phy_addr	= -1,
-	.interface	= PHY_INTERFACE_MODE_MII,
-	.mdio_bus_data	= &ls1x_mdio_bus_data,
-	.dma_cfg	= &ls1x_eth_dma_cfg,
-	.has_gmac	= 1,
-	.tx_coe		= 1,
-	.init		= ls1x_eth_mux_init,
-};
-
-static struct resource ls1x_eth0_resources[] = {
-	[0] = {
-		.start	= LS1X_GMAC0_BASE,
-		.end	= LS1X_GMAC0_BASE + SZ_64K - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	[1] = {
-		.name	= "macirq",
-		.start	= LS1X_GMAC0_IRQ,
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-struct platform_device ls1x_eth0_pdev = {
-	.name		= "stmmaceth",
-	.id		= 0,
-	.num_resources	= ARRAY_SIZE(ls1x_eth0_resources),
-	.resource	= ls1x_eth0_resources,
-	.dev		= {
-		.platform_data = &ls1x_eth0_pdata,
-	},
-};
-
-static struct plat_stmmacenet_data ls1x_eth1_pdata = {
-	.bus_id		= 1,
-	.phy_addr	= -1,
-	.interface	= PHY_INTERFACE_MODE_MII,
-	.mdio_bus_data	= &ls1x_mdio_bus_data,
-	.dma_cfg	= &ls1x_eth_dma_cfg,
-	.has_gmac	= 1,
-	.tx_coe		= 1,
-	.init		= ls1x_eth_mux_init,
-};
-
-static struct resource ls1x_eth1_resources[] = {
-	[0] = {
-		.start	= LS1X_GMAC1_BASE,
-		.end	= LS1X_GMAC1_BASE + SZ_64K - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	[1] = {
-		.name	= "macirq",
-		.start	= LS1X_GMAC1_IRQ,
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-struct platform_device ls1x_eth1_pdev = {
-	.name		= "stmmaceth",
-	.id		= 1,
-	.num_resources	= ARRAY_SIZE(ls1x_eth1_resources),
-	.resource	= ls1x_eth1_resources,
-	.dev		= {
-		.platform_data = &ls1x_eth1_pdata,
-	},
-};
-
-/* USB EHCI */
-static u64 ls1x_ehci_dmamask = DMA_BIT_MASK(32);
-
-static struct resource ls1x_ehci_resources[] = {
-	[0] = {
-		.start	= LS1X_EHCI_BASE,
-		.end	= LS1X_EHCI_BASE + SZ_32K - 1,
-		.flags	= IORESOURCE_MEM,
-	},
-	[1] = {
-		.start	= LS1X_EHCI_IRQ,
-		.flags	= IORESOURCE_IRQ,
-	},
-};
-
-static struct usb_ehci_pdata ls1x_ehci_pdata = {
-};
-
-struct platform_device ls1x_ehci_pdev = {
-	.name		= "ehci-platform",
-	.id		= -1,
-	.num_resources	= ARRAY_SIZE(ls1x_ehci_resources),
-	.resource	= ls1x_ehci_resources,
-	.dev		= {
-		.dma_mask = &ls1x_ehci_dmamask,
-		.platform_data = &ls1x_ehci_pdata,
-	},
-};
-
-/* Real Time Clock */
-struct platform_device ls1x_rtc_pdev = {
-	.name		= "ls1x-rtc",
-	.id		= -1,
-};
diff --git a/kernel/arch/mips/loongson1/common/prom.c b/kernel/arch/mips/loongson1/common/prom.c
deleted file mode 100644
index 68600980e..000000000
--- a/kernel/arch/mips/loongson1/common/prom.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
- * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
- *
- * Modified from arch/mips/pnx833x/common/prom.c.
- *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- */
-
-#include <linux/serial_reg.h>
-#include <asm/bootinfo.h>
-
-#include <loongson1.h>
-#include <prom.h>
-
-int prom_argc;
-char **prom_argv, **prom_envp;
-unsigned long memsize, highmemsize;
-
-char *prom_getenv(char *envname)
-{
-	char **env = prom_envp;
-	int i;
-
-	i = strlen(envname);
-
-	while (*env) {
-		if (strncmp(envname, *env, i) == 0 && *(*env + i) == '=')
-			return *env + i + 1;
-		env++;
-	}
-
-	return 0;
-}
-
-static inline unsigned long env_or_default(char *env, unsigned long dfl)
-{
-	char *str = prom_getenv(env);
-	return str ? simple_strtol(str, 0, 0) : dfl;
-}
-
-void __init prom_init_cmdline(void)
-{
-	char *c = &(arcs_cmdline[0]);
-	int i;
-
-	for (i = 1; i < prom_argc; i++) {
-		strcpy(c, prom_argv[i]);
-		c += strlen(prom_argv[i]);
-		if (i < prom_argc - 1)
-			*c++ = ' ';
-	}
-	*c = 0;
-}
-
-void __init prom_init(void)
-{
-	void __iomem *uart_base;
-	prom_argc = fw_arg0;
-	prom_argv = (char **)fw_arg1;
-	prom_envp = (char **)fw_arg2;
-
-	prom_init_cmdline();
-
-	memsize = env_or_default("memsize", DEFAULT_MEMSIZE);
-	highmemsize = env_or_default("highmemsize", 0x0);
-
-	if (strstr(arcs_cmdline, "console=ttyS3"))
-		uart_base = ioremap_nocache(LS1X_UART3_BASE, 0x0f);
-	else if (strstr(arcs_cmdline, "console=ttyS2"))
-		uart_base = ioremap_nocache(LS1X_UART2_BASE, 0x0f);
-	else if (strstr(arcs_cmdline, "console=ttyS1"))
-		uart_base = ioremap_nocache(LS1X_UART1_BASE, 0x0f);
-	else
-		uart_base = ioremap_nocache(LS1X_UART0_BASE, 0x0f);
-	setup_8250_early_printk_port((unsigned long)uart_base, 0, 0);
-}
-
-void __init prom_free_prom_memory(void)
-{
-}
diff --git a/kernel/arch/mips/loongson1/common/reset.c b/kernel/arch/mips/loongson1/common/reset.c
deleted file mode 100644
index c41e4ca56..000000000
--- a/kernel/arch/mips/loongson1/common/reset.c
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
- *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- */
-
-#include <linux/io.h>
-#include <linux/pm.h>
-#include <asm/idle.h>
-#include <asm/reboot.h>
-
-#include <loongson1.h>
-
-static void __iomem *wdt_base;
-
-static void ls1x_halt(void)
-{
-	while (1) {
-		if (cpu_wait)
-			cpu_wait();
-	}
-}
-
-static void ls1x_restart(char *command)
-{
-	__raw_writel(0x1, wdt_base + WDT_EN);
-	__raw_writel(0x1, wdt_base + WDT_TIMER);
-	__raw_writel(0x1, wdt_base + WDT_SET);
-
-	ls1x_halt();
-}
-
-static void ls1x_power_off(void)
-{
-	ls1x_halt();
-}
-
-static int __init ls1x_reboot_setup(void)
-{
-	wdt_base = ioremap_nocache(LS1X_WDT_BASE, 0x0f);
-	if (!wdt_base)
-		panic("Failed to remap watchdog registers");
-
-	_machine_restart = ls1x_restart;
-	_machine_halt = ls1x_halt;
-	pm_power_off = ls1x_power_off;
-
-	return 0;
-}
-
-arch_initcall(ls1x_reboot_setup);
diff --git a/kernel/arch/mips/loongson1/common/setup.c b/kernel/arch/mips/loongson1/common/setup.c
deleted file mode 100644
index 62f41afee..000000000
--- a/kernel/arch/mips/loongson1/common/setup.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
- *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- */
-
-#include <asm/bootinfo.h>
-
-#include <prom.h>
-
-void __init plat_mem_setup(void)
-{
-	add_memory_region(0x0, (memsize << 20), BOOT_MEM_RAM);
-}
-
-const char *get_system_type(void)
-{
-	unsigned int processor_id = (&current_cpu_data)->processor_id;
-
-	switch (processor_id & PRID_REV_MASK) {
-	case PRID_REV_LOONGSON1B:
-		return "LOONGSON LS1B";
-	default:
-		return "LOONGSON (unknown)";
-	}
-}
diff --git a/kernel/arch/mips/loongson1/common/time.c b/kernel/arch/mips/loongson1/common/time.c
deleted file mode 100644
index df0f850d6..000000000
--- a/kernel/arch/mips/loongson1/common/time.c
+++ /dev/null
@@ -1,226 +0,0 @@
-/*
- * Copyright (c) 2014 Zhang, Keguang <keguang.zhang@gmail.com>
- *
- * This program is free software; you can redistribute	it and/or modify it
- * under  the terms of	the GNU General	 Public License as published by the
- * Free Software Foundation;  either version 2 of the  License, or (at your
- * option) any later version.
- */
-
-#include <linux/clk.h>
-#include <linux/interrupt.h>
-#include <asm/time.h>
-
-#include <loongson1.h>
-#include <platform.h>
-
-#ifdef CONFIG_CEVT_CSRC_LS1X
-
-#if defined(CONFIG_TIMER_USE_PWM1)
-#define LS1X_TIMER_BASE	LS1X_PWM1_BASE
-#define LS1X_TIMER_IRQ	LS1X_PWM1_IRQ
-
-#elif defined(CONFIG_TIMER_USE_PWM2)
-#define LS1X_TIMER_BASE	LS1X_PWM2_BASE
-#define LS1X_TIMER_IRQ	LS1X_PWM2_IRQ
-
-#elif defined(CONFIG_TIMER_USE_PWM3)
-#define LS1X_TIMER_BASE	LS1X_PWM3_BASE
-#define LS1X_TIMER_IRQ	LS1X_PWM3_IRQ
-
-#else
-#define LS1X_TIMER_BASE	LS1X_PWM0_BASE
-#define LS1X_TIMER_IRQ	LS1X_PWM0_IRQ
-#endif
-
-DEFINE_RAW_SPINLOCK(ls1x_timer_lock);
-
-static void __iomem *timer_base;
-static uint32_t ls1x_jiffies_per_tick;
-
-static inline void ls1x_pwmtimer_set_period(uint32_t period)
-{
-	__raw_writel(period, timer_base + PWM_HRC);
-	__raw_writel(period, timer_base + PWM_LRC);
-}
-
-static inline void ls1x_pwmtimer_restart(void)
-{
-	__raw_writel(0x0, timer_base + PWM_CNT);
-	__raw_writel(INT_EN | CNT_EN, timer_base + PWM_CTRL);
-}
-
-void __init ls1x_pwmtimer_init(void)
-{
-	timer_base = ioremap(LS1X_TIMER_BASE, 0xf);
-	if (!timer_base)
-		panic("Failed to remap timer registers");
-
-	ls1x_jiffies_per_tick = DIV_ROUND_CLOSEST(mips_hpt_frequency, HZ);
-
-	ls1x_pwmtimer_set_period(ls1x_jiffies_per_tick);
-	ls1x_pwmtimer_restart();
-}
-
-static cycle_t ls1x_clocksource_read(struct clocksource *cs)
-{
-	unsigned long flags;
-	int count;
-	u32 jifs;
-	static int old_count;
-	static u32 old_jifs;
-
-	raw_spin_lock_irqsave(&ls1x_timer_lock, flags);
-	/*
-	 * Although our caller may have the read side of xtime_lock,
-	 * this is now a seqlock, and we are cheating in this routine
-	 * by having side effects on state that we cannot undo if
-	 * there is a collision on the seqlock and our caller has to
-	 * retry.  (Namely, old_jifs and old_count.)  So we must treat
-	 * jiffies as volatile despite the lock.  We read jiffies
-	 * before latching the timer count to guarantee that although
-	 * the jiffies value might be older than the count (that is,
-	 * the counter may underflow between the last point where
-	 * jiffies was incremented and the point where we latch the
-	 * count), it cannot be newer.
-	 */
-	jifs = jiffies;
-	/* read the count */
-	count = __raw_readl(timer_base + PWM_CNT);
-
-	/*
-	 * It's possible for count to appear to go the wrong way for this
-	 * reason:
-	 *
-	 *  The timer counter underflows, but we haven't handled the resulting
-	 *  interrupt and incremented jiffies yet.
-	 *
-	 * Previous attempts to handle these cases intelligently were buggy, so
-	 * we just do the simple thing now.
-	 */
-	if (count < old_count && jifs == old_jifs)
-		count = old_count;
-
-	old_count = count;
-	old_jifs = jifs;
-
-	raw_spin_unlock_irqrestore(&ls1x_timer_lock, flags);
-
-	return (cycle_t) (jifs * ls1x_jiffies_per_tick) + count;
-}
-
-static struct clocksource ls1x_clocksource = {
-	.name		= "ls1x-pwmtimer",
-	.read		= ls1x_clocksource_read,
-	.mask		= CLOCKSOURCE_MASK(24),
-	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static irqreturn_t ls1x_clockevent_isr(int irq, void *devid)
-{
-	struct clock_event_device *cd = devid;
-
-	ls1x_pwmtimer_restart();
-	cd->event_handler(cd);
-
-	return IRQ_HANDLED;
-}
-
-static void ls1x_clockevent_set_mode(enum clock_event_mode mode,
-				     struct clock_event_device *cd)
-{
-	raw_spin_lock(&ls1x_timer_lock);
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		ls1x_pwmtimer_set_period(ls1x_jiffies_per_tick);
-		ls1x_pwmtimer_restart();
-	case CLOCK_EVT_MODE_RESUME:
-		__raw_writel(INT_EN | CNT_EN, timer_base + PWM_CTRL);
-		break;
-	case CLOCK_EVT_MODE_ONESHOT:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-		__raw_writel(__raw_readl(timer_base + PWM_CTRL) & ~CNT_EN,
-			     timer_base + PWM_CTRL);
-		break;
-	default:
-		break;
-	}
-	raw_spin_unlock(&ls1x_timer_lock);
-}
-
-static int ls1x_clockevent_set_next(unsigned long evt,
-				    struct clock_event_device *cd)
-{
-	raw_spin_lock(&ls1x_timer_lock);
-	ls1x_pwmtimer_set_period(evt);
-	ls1x_pwmtimer_restart();
-	raw_spin_unlock(&ls1x_timer_lock);
-
-	return 0;
-}
-
-static struct clock_event_device ls1x_clockevent = {
-	.name		= "ls1x-pwmtimer",
-	.features	= CLOCK_EVT_FEAT_PERIODIC,
-	.rating		= 300,
-	.irq		= LS1X_TIMER_IRQ,
-	.set_next_event	= ls1x_clockevent_set_next,
-	.set_mode	= ls1x_clockevent_set_mode,
-};
-
-static struct irqaction ls1x_pwmtimer_irqaction = {
-	.name		= "ls1x-pwmtimer",
-	.handler	= ls1x_clockevent_isr,
-	.dev_id		= &ls1x_clockevent,
-	.flags		= IRQF_PERCPU | IRQF_TIMER,
-};
-
-static void __init ls1x_time_init(void)
-{
-	struct clock_event_device *cd = &ls1x_clockevent;
-	int ret;
-
-	if (!mips_hpt_frequency)
-		panic("Invalid timer clock rate");
-
-	ls1x_pwmtimer_init();
-
-	clockevent_set_clock(cd, mips_hpt_frequency);
-	cd->max_delta_ns = clockevent_delta2ns(0xffffff, cd);
-	cd->min_delta_ns = clockevent_delta2ns(0x000300, cd);
-	cd->cpumask = cpumask_of(smp_processor_id());
-	clockevents_register_device(cd);
-
-	ls1x_clocksource.rating = 200 + mips_hpt_frequency / 10000000;
-	ret = clocksource_register_hz(&ls1x_clocksource, mips_hpt_frequency);
-	if (ret)
-		panic(KERN_ERR "Failed to register clocksource: %d\n", ret);
-
-	setup_irq(LS1X_TIMER_IRQ, &ls1x_pwmtimer_irqaction);
-}
-#endif /* CONFIG_CEVT_CSRC_LS1X */
-
-void __init plat_time_init(void)
-{
-	struct clk *clk = NULL;
-
-	/* initialize LS1X clocks */
-	ls1x_clk_init();
-
-#ifdef CONFIG_CEVT_CSRC_LS1X
-	/* setup LS1X PWM timer */
-	clk = clk_get(NULL, "ls1x_pwmtimer");
-	if (IS_ERR(clk))
-		panic("unable to get timer clock, err=%ld", PTR_ERR(clk));
-
-	mips_hpt_frequency = clk_get_rate(clk);
-	ls1x_time_init();
-#else
-	/* setup mips r4k timer */
-	clk = clk_get(NULL, "cpu_clk");
-	if (IS_ERR(clk))
-		panic("unable to get cpu clock, err=%ld", PTR_ERR(clk));
-
-	mips_hpt_frequency = clk_get_rate(clk) / 2;
-#endif /* CONFIG_CEVT_CSRC_LS1X */
-}